Wash-free dinnerware with surface-mounted insulating layer

ABSTRACT

The present invention provides a wash-free dinnerware, which is characterized in that, the surface of the wash-free dinnerware is provided with an insulating layer made of food-grade, high-temperature thermoplastic or thermosetting plastic materials; the insulating layer is formed onto the surface of wash-free dinnerware by means of thermal shrinkage, or immersion or blowing. So, the insulating layer could prevent direct contact of wash-free dinnerware with food.

BACKGROUND OF THE INVENTION

The present invention relates generally to a wash-free dinnerware, and more particularly to an innovative one which is designed with a surface-mounted insulating layer.

As more and more people get used to eating out, there is a growing consumption of wash-free dinnerware. However, the commonly used wash-free dinnerware may cause physical discomfort or pathological change since they're often bleached through sulfur or hydrogen peroxide and then sun-cured or dried up. In this way, non-disinfected but fiberized composition is shaped within the chopsticks, and microporous cross-section can be visibly observed if the chopsticks are broken; the sulfur or hydrogen peroxide left in the micropores cannot be filtered, but releases Sulfur Dioxide if hot food is contacted, which will enter into the human body along with the food, leading to possible physical discomfort or even lymphatic cancer. For example, Biphenyl and preservative agent were discovered by the regulatory bodies from random inspection of imported wash-free chopsticks. In the event of intake of numerous preservative agent, it is possible to stimulate the respiratory system and cause nausea, vomiting, drowsiness and liver injury, or coughing or breathing problem; long-term inhalation will lead to cirrhosis, neuropathy and brain lesions, posing a serious hazard against health. Moreover, the dinnerware carried by the consumer shall also be cleaned up to prevent the multiplication of bacteria. So, the practitioners shall make more efforts to offer clean wash-free dinnerware for the sake of the consumers.

Thus, to overcome the aforementioned problems of the prior art, it would be an advancement if the art to provide an improved structure that can significantly improve the efficacy.

Therefore, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products.

BRIEF SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a wash-free dinnerware with a surface-mounted insulating layer, which is made of food-grade, high-temperature thermoplastic or thermosetting plastic materials. The insulating layer is formed onto the surface of wash-free dinnerware by means of thermal shrinkage or immersion, or blown and then adapted onto the surface of wash-free dinnerware. When the wash-free dinnerware is used, the insulating layer could prevent direct contact of wash-free dinnerware and food, thereby improving the sanitation of diet and safeguarding the human health.

Another objective of the present invention is to provide a wash-free dinnerware of different shapes or dimensions, which is also designed with a surface-mounted insulating layer.

To sum up, the present invention of simple structural design is expected to meet the desired performance and highlight the novelty and progress of this claim. The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a schematic view of a preferred embodiment of the present invention.

FIG. 2 depicts a schematic view of second preferred embodiment of the present invention.

FIG. 3 depicts a schematic view of third preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION Embodiment 1

FIG. 1 depicts a preferred embodiment of the present invention, wherein an insulating layer is formed on the surface of the wash-free dinnerware; and the insulating layer is made of food-grade, high-temperature thermoplastic materials; moreover, the insulating layer 12 is molded directly onto the surface of wash-free dinnerware 10 by thermal shrinkage method. This method comprises the following steps:

a. Preform the thermoplastic material into a crude embryo 11 with the same shape of wash-free dinnerware 10;

b. Sleeve the crude embryo 11 onto the surface of the wash-free dinnerware 10;

c. Heat up the wash-free dinnerware 10 for thermal shrinkage, until the crude embryo 11 is fully mated with the wash-free dinnerware 10.

Embodiment 2

FIG. 2 depicts the second preferred embodiment of the present invention, wherein an insulating layer is formed on the surface of the wash-free dinnerware; and the insulating layer is made of food-grade, high-temperature thermoplastic or thermosetting plastic materials. The insulating layer 12 is formed onto the surface of wash-free dinnerware 10 by means of immersion. This method comprises the following steps:

a. Select liquid thermoplastic or thermosetting plastic materials, and place into a plastic trough 20;

b. Immerse the wash-free dinnerware 10 into the plastic trough 20 and then take out;

c. Place the wash-free dinnerware 10 attached with liquid thermoplastic or thermosetting plastic materials into a rotary baking equipment, and conduct surface homogenization and curing process.

Embodiment 3

FIG. 3 depicts the third preferred embodiment of the present invention, wherein the insulating layer of wash-free dinnerware is made of food-grade, high-temperature thermoplastic or thermosetting plastic materials; and the insulating layer is blown and then adapted onto the surface of wash-free dinnerware. This method comprises the following steps:

a. Select male and female moulds 30, 31 wherein preformed grooves 301, 311 are arranged symmetrically; after closing the male and female moulds 30, 31, the symmetrical grooves 301, 311 form a hollow chamber, and an interface 32 linking the hollow chamber to external environment is shaped at one end; the shape of hollow chamber conforms to that of wash-free dinnerware;

b. Connect a nozzle 33 with the interface 32; liquid thermoplastic or thermosetting plastic materials exist in the nozzle 33; high-pressure air is charged at the other end of the nozzle 33, so that the liquid thermoplastic or thermosetting plastic materials are filled into the hollow chamber shaped from the male and female moulds 30, 31;

c. Open and strip the mould after curing of liquid thermoplastic or thermosetting plastic materials in the hollow chamber of male and female moulds 30, 31.

The insulating layer 12 could be selectively sleeved onto the surface of the wash-free dinnerware.

Based on aforementioned embodiments, the wash-free dinnerware of the present invention could be designed with a surface-mounted insulating layer, which can prevent direct contact of wash-free dinnerware with food; the insulating layer is also of a film structure made from food-grade, high-temperature thermoplastic or thermosetting plastic materials.

To sum up, the wash-free dinnerware with an insulating layer could realize its efficacy through above-specified embodiments; and the present invention isn't published or utilized openly before submitting the Claims in line with the novelty and progress of inventions.

Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed. 

1. A wash-free dinnerware with a surface-mounted insulating layer, wherein the insulating layer could prevent direct contact of wash-free dinnerware with food.
 2. The structure defined in claim 1, wherein said insulating layer is a film structure.
 3. The structure defined in claim 1, wherein said insulating layer is made of thermoplastic or thermosetting plastic materials.
 4. The structure defined in claim 3, wherein said thermoplastic or thermosetting plastic materials are selected from food-grade, high-temperature plastics.
 5. The structure defined in claim 1, wherein said insulating layer is selected from food-grade, high-temperature thermoplastic material, and formed onto the surface of wash-free dinnerware by means of thermal shrinkage.
 6. The structure defined in claim 5, wherein the thermal shrinkage comprises the following steps: a. Preform the thermoplastic material into a crude embryo with the same shape of wash-free dinnerware; b. Sleeve the crude embryo onto the surface of the wash-free dinnerware; c. Heat up the wash-free dinnerware for thermal shrinkage, until the crude embryo is fully mated with the wash-free dinnerware.
 7. The structure defined in claim 1, wherein said insulating layer is selected from food-grade, high-temperature thermoplastic material, and formed onto the surface of wash-free dinnerware by means of immersion.
 8. The structure defined in claim 7, wherein the immersion method comprises the following steps: a. Select liquid thermoplastic or thermosetting plastic materials, and place into a plastic trough; b. Immerse the wash-free dinnerware into the plastic trough and then take out; c. Place the wash-free dinnerware attached with liquid thermoplastic or thermosetting plastic materials into a rotary baking equipment, and conduct surface homogenization and curing process.
 9. The structure defined in claim 1, wherein said insulating layer is selected from food-grade, high-temperature thermoplastic or thermosetting plastic material, and formed onto the surface of wash-free dinnerware by means of blowing.
 10. The structure defined in claim 9, wherein the blowing method comprises the following steps: a. Select male and female moulds wherein preformed grooves are arranged symmetrically; after closing the male and female moulds, the symmetrical grooves form a hollow chamber, and an interface linking the hollow chamber to external environment is shaped at one end; the shape of hollow chamber conforms to that of wash-free dinnerware; b. Connect a nozzle with the interface; liquid thermoplastic or thermosetting plastic materials exist in the nozzle; high-pressure air is charged at the other end of the nozzle, so that the liquid thermoplastic or thermosetting plastic materials are filled into the hollow chamber shaped from the male and female moulds; c. Open and strip the mould after curing of liquid thermoplastic or thermosetting plastic materials in the hollow chamber of male and female moulds. 